选择题:A terrible fire broke out last week,and ()caused a great loss.

问题描述:

选择题:A terrible fire broke out last week,and ()caused a great loss.
a.which
b.what
c.ie
d.these

it 因为and这个连词可以连接两个句子,后面一个句子缺少主语,it替代大火在句子中充当主语,所以选it,如果没有and的话就选which